ajust the readme
《Introduction》第一遍校对完成。
Merge pull request #132 from vincent4j/master

格式化 list-controls
origin tranlation
modified simple mixtake
modifid simple mistakes again
Merge pull request #134 from lightlz/master

layout-principles
Merge pull request #124 from siton/siton

增加校对人员
add images for patterns-gestures
Merge pull request #135 from IceskYsl/master

add images for patterns-gestures
修改排版格式，初稿
修改排版，初稿1
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Update meaningful-transitions.md

add video, corrected  ul
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Merge pull request #136 from Jingsha/patch-2

Update meaningful-transitions.md
修改了度量与边框章节的排版
chenzimu7 认领：snackbars-and-toasts